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GUARANTEES (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Apr. 30, 2013
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2015
Oct. 31, 2014
Guarantees [Abstract]          
Standard warranty, term 1 year 3 years      
Movement in Standard Product Warranty Accrual [Roll Forward]          
Beginning balance   $ 51 $ 38    
Accruals for warranties, including change in estimates   33 46    
Settlements made during the period   (31) (33)    
Ending balance   53 51    
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]          
Accruals for warranties due within one year       $ 34 $ 34
Accruals for warranties due after one year       19 17
Ending balance as of October 31, Previous year   $ 51 $ 38 $ 53 $ 51